Water temp measurement

Mark_46

Anybody have any experience (good or bad) with the product linked below? Looking to measure at least relative in/out water temps of hydro-coils. Any feedback is appreciated.


http://www.azeltec.com/catalog.0.html.0.html#DIGIT-STAT

Brad White

I use them

Good product, simple. Could be less expensive I suppose.

Mark_46

Hey Brad

Long time no type!

Yes, a little pricey but I'm willing to 'invest' in one if it's a good product. It appears that it's what I'm looking for and you say it's good - one's opinion I certainly value.

The only short coming I can see is that by design it will actually measure PIPE temp rather than actual WATER temp. My thinking is even if that's the case, as long as the readings are relative, a delta T can be determined and it will have served it's purpose.

Finally, I presume it would be more accurate than an infrared thermometer?

Brad White

Yo-



Hi Mark- it has been a while.

The sensors are excellent, Tekmar I believe, you know, how they are curved to the surface of a pipe?

I use them both ways, surface mount with heat conductive compound and in an immersion well (also with compound). Seems as good as any if you accept a small accuracy loss versus direct fluid contact.

You still have to do your delta-T math in your head. One thing I do not like about them (small fussy detail) is that they switch back from F to C units without asking me. No big deal really. Mine operates off a 24V power supply but they also have batteries in the same unit, (2) AA cells I believe.

IR thermometers to me are not so accurate for these purposes. For one thing, they cannot accurately read metallic surfaces unless painted. In the end you are not reading temperature but an interpretation of temperature based on IR emittance. Still pretty remarkable though!

Thanks for your vote o'confidence.

Brad